Motoring and Generating Mode

Question 1

what is motoring mode

Answer 1

armature current flows into the machine from the power supply so mechanical power is delivered to the load

Pmech>0, Ia = +ve and back emf< Vin and T = +ve

this dc machine is considered a motor

Question 2

what is generating mode

Answer 2

mech system is providing mech powere to the system and the machine is absorbing p(mech)/power transfered to supply and

P(mech)<0, Ia = -ve, backemf(e) > Vin, T = -ve

this dc machine is considered a generator